2 small java assignments

Assignment 1 due: Small JAVA debugging exercise (

Understanding Error Messages

)needed before 11:55am Nov. 24, 2013 (CST).

Assignment 2 due: Small JAVA interactive program (

Creating an Assignment Data File

) needed before 11:55am Nov. 31, 2013 (CST).

Begin of Assignment 1

Understanding Error Messages

Using TextPad, open the file named Connections from the Chapter07 folder of the Data Disk that accompanies this book (see below for complete source). Use the Replace command on the Search menu to replace all occurrences of the word, Connections, with the word, Modems. Save the file as a Java source code file with the file name Modems. Then, compile the program.When TextPad displays errors in the Command Results window, double-click the first line of the first error message to return to that line in the TextPad coding window. Fix the error. Insert a comment line in your code identifying what caused the error. Compile again and repeat the process until the program is error free. Submit your source code to your instructor.

 

— begin import of Connections.java —

 /*

           

Chapter 7:         Connections

            Programmer:

            Date:

            Filename:          Connections.java

            Purpose:           This program creates a Swing interface Modem Connections

*/ 

importjava.awt.*;

importjava.awt.event.*;

importjavax.swing.*;

importjavax.swing.text.*;

 

public class Connections extendsJFrameimplementsActionListener

{

            //construct components

            JComboBoxfirstCombo = new JComboBox();

            JComboBoxsecondCombo = new JComboBox();

            JTextPanetextPane = new JTextPane();

 

            //construct instance of Connections

            public Connections()

            {

          

  }

 

            //create the menu system

            publicJMenuBarcreateMenuBar()

            {

                       
//create an instance of the menu

                        setJMenuBar(mnuBar);

 

                        //construct and populate the File menu

                        JMenumnuFile =new JMenu(“File”, true);

                                    mnuFile.setDisplayedMnemonicIndex(0);

                                    mnuBar.add(mnuFile);

 

                                    JMenuItemmnuFileExit = new JMenuItem(“Exit”);

                                                mnuFileExit.setDisplayedMnemonicIndex(1);

                                                mnuFile.add(mnuFileExit);

                                                mnuFileExit.setActionCommand(“Exit”);

                                                mnuFileExit.addActionListener(this);

 

                        //construct and populate the Edit menu

                        JMenumnuEdit = new JMenu(“Edit”, true);

                                    mnuEdit.setDisplayedMnemonicIndex(0);

                                    mnuBar.add(mnuEdit);

 

                                    JMenuItemmnuEditInsert = new JMenuItem(“Insert New Connections”);

                                                mnuEditInsert.setDisplayedMnemonicIndex(0);

                                                mnuEdit.add(mnuEditInsert);

                                                mnuEditInsert.setActionCommand(“Insert”);

                                                mnuEditInsert.addActionListener(this);

 

                                    JMenumnuEditSearch = new JMenu(“Search”);

                                                            mnuEditSearch.setDisplayedMnemonicIndex(3);

                                                            mnuEdit.add(mnuEditSearch);

 

                                                JMenuItemmnuEditSearchByConnection = new JMenuItem(“by Connection”);

                                                            mnuEditSearchByConnection.setDisplayedMnemonicIndex(3);

                                                            mnuEditSearch.add(mnuEditSearchByConnection);

                                                            mnuEditSearchByConnection.setActionCommand(“title”);

                                                            mnuEditSearchByConnection.addActionListener(this);

 

                                                JMenuItemmnuEditSearchBySpeed = new JMenuItem(“by Speed”);

                                                            mnuEditSearchBySpeed.setDisplayedMnemonicIndex(3);

                                                            mnuEditSearch.add(mnuEditSearchBySpeed);

                                                            mnuEditSearchBySpeed.setActionCommand(“studio”);

                                                            mnuEditSearchBySpeed.addActionListener(this);

 

                                                JMenuItemmnuEditSearchByProtocol = new JMenuItem(“by Protocol”);

                                                            mnuEditSearchByProtocol.setDisplayedMnemonicIndex(3);

                                                            mnuEditSearch.add(mnuEditSearchByProtocol);

                                                            mnuEditSearchByProtocol.setActionCommand(“year”);

                                                            mnuEditSearchByProtocol.addActionListener(this);

 

                        returnmnuBar;

            }

 

            //create the content pane

            public Container createContentPane()

            {

                        //populate the JComboBox

                        fieldCombo.addItem(“Dial-Up”);

                        fieldCombo.addItem(“DSL”);

                        fieldCombo.addItem(“Cable”);

                                                fieldCombo.addItem(“Satellite”);

 

                        fieldCombo.addActionListener(this);

                        fieldCombo.setToolTip(“Click the drop down arrow to display connection types.”);

                         //populate the JComboBox

                        secondCombo.addItem(“57600”);

                        secondCombo.addItem(“2304000”);

                        secondCombo.addItem(“460800”);

                                                secondCombo.addItem(“921600”);

 

                        secondCombo.addActionListener(this);

                        secondCombo.setEditable(true);

 

                        //construct and populate the north panel

                        JPanelnorthPanel = new JPanel();

                                    northPanel.setLayout(new FlowLayout());

                                    //northPanel.add(sortPrompt);

                                    northPanel.add(fieldCombo);

                                    northPanel.add(secondCombo);

 

                        //create the JTextPane and center panel

                        JPanelcenterPanel = new JPanel();

                                    setTabsAndStyles(textPane);

                                    JTextPaneinternalTextPane = addTextToTextPane();

                                    JScrollPanepaneScrollPane = new JScrollPane(internalTextPane);

                                                paneScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

                                                paneScrollPane.setPreferredSize(new Dimension(500, 200));

                                    centerPanel.add(paneScrollPane);

 

                        //create Container and set attributes

                        Container c = getContentPane();

                                    c.setLayout(new BorderLayout(10,10));

                                    c.add(northPanel,BorderLayout.NORTH);

                                    c.add(centerPanel,BorderLayout.CENTER);

 

                        return c;

            } 

            //method to create tab stops and set font styles

            protected void setTabsAndStyles(JTextPanetextPane)

            {

                        //create Tab Stops

                        TabStop[] tabs = new TabStop[2];

                                    tabs[0] = new TabStop(200, TabStop.ALIGN_LEFT, TabStop.LEAD_NONE);

                                    tabs[1] = new TabStop(350, TabStop.ALIGN_LEFT, TabStop.LEAD_NONE);

                        TabSettabset = new TabSet(tabs);

 

                        //set Tab Style

                        StyleContexttabStyle = StyleContext.getDefaultStyleContext();

                        AttributeSetaset =

                                                tabStyle.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.TabSet, tabset);

                        textPane.setParagraphAttributes(aset, false);

 

                        //set Font Style

                        Style fontStyle =

                                                StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);

 

                        Style regular = textPane.addStyle(“regular”, fontStyle);

                        StyleConstants.setFontFamily(fontStyle, “SansSerif”);

 

                        Style s = textPane.addStyle(“italic”, regular);

                        StyleConstants.setItalic(s, true);

 

                        s = textPane.addStyle(“bold”, regular);

                        StyleConstants.setBold(s, true);

 

                        s = textPane.addStyle(“large”, regular);

                        StyleConstants.setFontSize(s, 16);

            } 

            //method to add new text to the JTextPane

            public JTextPaneaddTextToTextPane()

            {

                        Document doc = textPane.getDocument();

                        try

                        {

                                    //clear previous text

                                    doc.remove(0,doc.getLength());

 

                                    //insert title

                                    doc.insertText(0,”\nCONNECTIONS\tNUMBERS\t PROTOCOLS\n”, textPane.getStyle(“regular”));

   }

                        catch (BadLocationExceptionble)

                        {

                                    System.err.println(“Couldn’t insert text.”);

                        }

 

                        returntextPane;

            } 

            //event to process user clicks

            public void actionPerformed(ActionEvent e)

            { }

            //main method executes at run time

            public static void main(String args[])

            {

                        JFrame.setDefaultLookAndFeelDecorated(true);

            Connections f = new Connections();

            f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );

                        f.setJMenuBar(f.createMenuBar());

                        f.setContentPane(f.createContentPane());

            f.setSize(600,375);

            f.setVisible(true);

            }} 

— end import of Connections.java —

 

End of Assignment 1

  

Begin Assignment 2

 Creating an Assignment Data File

Create an interface that lets you enter a description of your Java lab assignments and the grades you receive, storing them in a file on your flash drive. Create a Submit button for the submission of each grade and a Done button to close the file.When you click the Done button, the Submit button should disappear and a Retrieve button should take its place. Use the Swing new Ocean Look and Feel. Add functionality to each button.

 End Assignment 2  

End of total project